DISSIPATION IN THE SUPERCONDUCTING MIXED-STATE IN THE PRESENCE OF A SMALL OSCILLATORY MAGNETIC-FIELD COMPONENT

We have studied the electric resistivity in superconducting amorphous Mo3Si films in a perpendicular magnetic field B-0 + B-1 sin omega t wi th B-1 much less than B-0. For B-1 = 0 a resistive voltage only appear ed due to flux creep above the critical current I-c. For B-1 > 0 we ob served perfectly Ohmic behavior at currents I much less than I-c (B-1 = 0), with the resistivity increasing proportional to omega and B-1. W e present a simplified model discussion explaining our results in term s of the magnetic flux transferred across the sample during each cycle of the oscillatory magnetic field because of the electric transport c urrent.